Bay seniors keep begging to know about quiet restaurants. The quickest answer is that the pricier it is the more hushed it is. A hopefully better answer is the elegant, wall-less, roofless place called Jones, which claims itself as the City’s biggest rooftop lounge. Perched above the tawdry Tenderloin it has trees to block the wind, heaters to block the fog and air to diminish the din. It’s a popup from the team at Oola and though it mainly serves bar food, they do offer brunch now.